&lamba; Ex/λEm (pH 9) = 492/514 nm Yellow orange solid soluble in pH>6 water Store at 4°C and protect from light, especially in solution C21H12O7 MW: 376.3 [76823-03-5] &lamba; Ex/λEm (pH 9) = 492/514 nm Yellow orange solid soluble in pH>6 water Store at 4°C and protect from light, especially in solution C21H12O7 21127 MW: 376.3 [76823-03-5]